Step-by-Step Production Guide

How to Record Front and Back Camera at the Same Time on iPhone

Whether you are filming travel vlogs, student reactions, tech unboxings, or sports commentary, capturing both directions simultaneously saves hours of video editing. Here is how to do it in under 60 seconds with zero cost and zero watermarks.

Tested on iOS 17.0 – iOS 18.3 • Hardware: Apple A12 Bionic and newer • Duration: 2-minute setup

5 Simple Steps to Dual-Camera Recording

1

Download a Dedicated Dual-Camera App (LaiLens)

Open the iOS App Store and search for LaiLens: Dual Camera Video. Because Apple’s built-in Camera app does not provide simultaneous front-and-rear feeds, a specialized app utilizing Apple's low-level AVMultiCamSession is required.

2

Grant Local Camera & Microphone Permissions

When opening LaiLens for the first time, allow Camera, Microphone, and Photos access. LaiLens operates 100% on-device with zero cloud uploads or telemetry, ensuring complete privacy.

3

Choose Your Composition Layout

Select between vertical 50/50 split-screen (ideal for TikTok, Instagram Reels, and YouTube Shorts) or Picture-in-Picture (PiP) reaction layout.

LaiLens Split Screen
Split-Screen
LaiLens PiP Mode
Picture-in-Picture
4

Hit the Record Button

Tap the red record shutter. Both front and back sensors start streaming at the exact same millisecond. Audio and video remain locked without any drift or lip-sync mismatch.

5

Stop & Save Directly to Photos Camera Roll

Tap Stop. The synchronized video file is written directly to your iPhone Photo Library at full bitrate with no watermark. You can share it immediately without desktop editing.

Lighting & Audio Tips for Dual-Camera Creators

Face the Primary Light Source Since both cameras expose at the same time, position yourself so you do not cast a deep silhouette while backlighting the background.
Keep iPhone Free of Bulky Insulated Cases Encoding two concurrent 4K feeds places high computational load on the Apple ISP. Using a slim case prevents thermal throttling during extended takes.

Start Filming in Dual-Camera Today

Get LaiLens on the App Store now. Free to download, clean watermark-free export, and completely local on your iPhone.

Download LaiLens for iPhone